Last updated: 8/3/2026
Acceptance of terms
By using JoistCalc ("the site"), you agree to these Terms of Use. If you do not agree, please do not use the site.
Use of the site
The calculators are provided free of charge for personal and commercial estimating use. You may not scrape, republish, or resell the site's content or tools as your own, or attempt to disrupt the site's operation.
Estimates only — not professional advice
Every calculator on this site produces an estimate based on the formulas and figures you enter. Results are for general planning purposes only and are not a substitute for advice from a licensed contractor, engineer, architect, or your material supplier. See the Disclaimer page for more detail.
No warranty
The site and its calculators are provided "as is" and "as available," without warranties of any kind, express or implied, including accuracy, completeness, or fitness for a particular purpose.
Limitation of liability
To the fullest extent permitted by law, JoistCalc and its operators are not liable for any direct, indirect, incidental, or consequential damages — including material overages, shortages, project delays, or costs — arising from use of, or reliance on, this site or its calculators.
Third-party advertising and links
This site displays third-party advertising, including through Google AdSense, and may link to third-party websites. We don't control and aren't responsible for the content, accuracy, or practices of those third parties. See our Privacy Policy for how advertising cookies are used.
Intellectual property
The site's design, layout, copy, and code are owned by JoistCalc unless otherwise noted. The underlying construction formulas are standard industry knowledge and are not proprietary.
Changes to these terms
We may update these terms from time to time. Continued use of the site after changes are posted constitutes acceptance of the updated terms.
Governing law
These terms are governed by the laws of [INSERT STATE/COUNTRY], without regard to conflict-of-law principles.
Contact us
Questions about these terms? Email webdev08@protonmail.com.